From WordNet (r) 1.6 [wn]:

  theory
       n 1: an organized system of accepted knowledge that applies in a
            variety of circumstances to explain a specific set of
            phenomena; "true in fact and theory"
       2: a concept that is not yet verified but that if true would
          explain certain facts or phenomena; "he proposed a fresh
          theory of alkalis that later was accepted in chemical
          practices" [syn: {hypothesis}, {possibility}]
       3: a belief that can guide behavior; "the architect has a
          theory that more is less"; "they killed him on the theory
          that dead men tell no tales"

Knowledge evolutionists want to see more theories expressed and transmitted more quickly so that more critical evaluation can be laid on them. Each theory, even if incorrect, can help to expose and allow more information.